<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id="app">
    <h2>{{message}}</h2>
    <h2>{{message}}，李银河</h2>
    <h2>{{firstName + lastName}}</h2>
    <h2>{{firstName + ' ' + lastName}}</h2>
    <h2>{{firstName}} {{lastName}}</h2>
    <h2>{{counter * 2}}</h2>
</div>

<script src="../../js/vue.js"></script>
<script>
    const app = new Vue({
        el: '#app',
        data: {
            message: '你好啊',
            firstName: 'kobe',
            lastName: 'bryant',
            counter: 100
        }
    })
</script>

</body>
</html>